Mold and handling device therefor



W. H. KEMPTDN.

MOLD AND HANDLING DEVICE THEREFOR. APPLICATION FILED AuG.26. 1918.

1,332,046. v Patented Feb. 24,1920.

. ATTRNEY NITED STATES" PATENT, OFFICE WILLARD KEMrToN,'oryvvI'LKINsiaI'IJae7 PENNSYLVANIA, AssIeNoR To wEs'rIN- HoUsEanncfraic'aA MANUFACTUMNG COMPANY, A coRPonATioNor PENNSYL- vANIA.

To all .whom t may concern.'

.. VBe itV knownthat I, VVILLARD H. Karfr- TQN, a citizen-of the UnitedStates, and -a resident of lVilkinsburg, in the countyof Allegheny andState of Pennsylvania, have invented a new vand useful Improvement inMolds and Handling Devices Therefoig'of which the following is aspecification.

My inif'enticn relates to molds and handling devices therefor and Amoreparticularly to molds for treating material impregnated with a binderadapted to `first soften and then harden under the application of heatand pressure.

In molding articles of material treated with shellac or gum as a binder,it is customary to heat the material and the mold, place the Atreatedmaterial in the mold and then dispose the mold in a cold press, afterwhich pressure may be applied. The desired body will be formed beforethe mold.

cools the material, as the operation is quickly performed.

In molding' bodies of material impregnated with a phenolic condensationproduct, however, the treated material is placed in a mold and the moldpositioned in a hot press, it being necessary to employ a hot press onaccount of the character of the binder which first softens and thenhardens under the application of heat. Heat and pressure are appliedsimultaneously until the material hasbeen suiliciently compacted and thebinder hardened, after which the mold and the body contained thereinmust be cooled before being removed fromV the press. If the mold isremoved from the press before it is cool, gases, which are formed when aphenolic condensation product is subjected to heat, will tend to forcethe mold open, with consequent damage to the body contained therein. Inview of this, the object of my invention is to provide a mold andhandling device therefor by the employment of which the mold, whilestill held in closed position, may be removed from the press immediatelyafter suicientpressure and heat have been applied and before the moldhas been cooled.

I-Ieretofore, work of this nature has been performed by alternatelyheating and cooling the hot press in which the material impregnated witha phenolic condensation product was placed but this is a relativelyexpensive process on account of the quan- MOLD ANopriaNnmNG rmi/"renminnares..

y sliecfiqationof Letters Patent. K .Patented Feb, 24, 1,920,

,. @Application filed August26, 1918. Serial 110.251,38. l

tity of heat wasted. For this reason, lI provide ainoldand a handlingdevice therefor by the employment of which material impregnated, with aphenolic condensation .product may be treated without undue ied claims.f

,In the drawings, Figure 1 is a plan view of a mold and a handlingdevice therefor. embodying my invention; Fig. 2 is a side elevation ofthe mold and handling device shown in ig. 1, and Fig. 3 is a sectionalview taken on the line III-III of Fig. l.

y In the drawing is shown a sectional mold 1 having side flanges 2 thatare of varying thickness from end to end. The mold 1 is shown positionedin a handling device 3 which comprises a handle 4 and prongs 5 that areprovided with channels 6 to receive the flanges 2 of the mold 1. Thechannels 6 in the prongs 5 are so formed that a wedging engagement iseffected between their walls and the flanges 2 of the mold 1 so that Ithe mold sections 7 are clamped together. The flanges 2 of the mold 1are so formed that, when the sections 7 of the mold are placedVtogether, a space 8 is provided between adjacent flanges 2 into whichsurplus binding material may flow and into which a suitable tool may beinserted for the purpose of separating the mold parts when the materialhas become fully treated.

My improved mold and handling devicey are especially adapted fortreating articles, such as stacked condensers. The stacked condenser,with its moldable covering, may

be placed between the separate sections of the mold and the molddisposed in a hot press, after which pressure may be applied until thecondenser is compacted and the binder, with ywhich its covering isimpregnated, becomes hardened. The prongs 5, which are thinner than themold, may then be slipped between the press plates to engage the iianges2 of the mold. The press may then be opened and the mold removedtherefrom and disposed in a cold press to cool. The wedging engagementobtained between the prong channels and the mold flanges prevents anydegree ofseparation of be imposed except such as are indicated in' theappended claims.

I claim as my invention: c

l. The combination with a sectional mold having side flanges of 'varyingthickness from end to end, of a transporting means havingprongs providedWith channels.v to receive the mold flanges and effect a clamping actionthereon.

2. The combination with a sectional mold having side flanges, of atransporting means having prongs provided with channels to receive `themold flanges.

3. The combination vWith mold Vsections tions firmly together. f

gust, 1918.

having projecting portions, of a transporting means `having prongsadapted'to engage said projecting portions and clamp kthe VVsec- 1.v TheCombination Wah asfeeamiinoid adapted to have its sections pressedvtogether in a press, of means provided With-ahandle for clamping thesections of the mold together applicable to the mold While it is in Ythepress. v

5. Av handling Vdevice fora mold compris- Ving ahandle having prongsprojecting therelfromprovided With channels in ltheir opposingjfaces. ff- Y 6. A handling device for a mold comprisingy a handle having .prongsproject-ing therefrom provided With channels tapered from end to end intheir opposing faces In testimony7V whereof, I have Vhereuntosubscribedmy name this 22nd day of An- WiLLARn HKEMPTON.

